Question

The magnification produced for an object by a mirror is -1/2 name the mirror and object position.


pls answer this question correctly​

Answer 1

Answer:

Correct option is

D

2f

f

1

=

v

1

−

u

1

, multiply using by u

⇒

f

u

=

v

u

−

u

u

=

v

u

−1

⇒

f

u

+1=

v

u

⇒

v

u

=

f

u+f

⇒

u

v

=

f+u

f

⇒m∣

u

−v

∣=

f+u

f

given that m=

3

1

So

3

1

=

f+u

f

⇒f+u=3f

⇒

u=2f